This document discusses the dangers and ineffectiveness of angioplasty compared to lifestyle changes and bypass surgery for treating coronary obstruction. It states that angioplasty is risky, provides only a temporary solution, and has high costs both financially and in terms of health risks. By contrast, lifestyle changes can prevent or reverse obstruction in many cases. For those who need intervention, bypass surgery provides a complete and long-term solution at a lower cost than repeated angioplasty procedures. The document concludes that lifestyle changes should be the first approach, with bypass surgery as the preferred intervention over angioplasty.